Hoof-pad.



UnirTnn fiTaTias PAENT Trice,

JOHN CAMPBELL, OF NEXV YORK, N. Y.

HUDlF- PAD.

SPECIFICATION formingpart Of Letters Patent N0- 691,11 1, dated January 14:, 1902. Application filed October 17, 1901. Serial No. 78.955- (No model) To ctZZ whom it may concern.-

Be it known that 1, JOHN CAMPBELL, a subject of the King of Great Britain, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a newand Improved Hoof-Pad, of which the following is a full, clear, and eX- act description.

This invention relates to hoof-pads which are used conjointly with a horseshoe and serve to furnish a cushion bearing the force of the blow of the hoof on the ground.

The invention resides in certain novel features of construction, which will be hereinafter fully described.

This specification is a specific description of one form of the invention, while the claims are definitions of the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a bottom View of the device,showing the pad and the backing. Fig. 2 is asection on the line 2 2 of Fig. 1. Fig. 3 is a section on the line 3 3 of Fig. 1, and Fig. 4 is a top View of the pad with the backin g removed.

0. indicates the backing, which is preferably in the form of aleather sheet. This is adapted to be laid and secured against the bottom of the hoof. On the under face of-the backing C6 is secured by cement or stitching or in any other way desired a cushion b, which is horseshoe-shaped, so as to lie against the inner side of the horseshoe and follow the contour thereof. This pad projects below the shoe, so as to contact first with the ground, and then if sufficient weight be placed on it the cushion will be compressed, so that the shoe itself will come in contact with the ground.

The cushion or pad is formed in its upper side, as best shown in Fig. 4, with a cavity a, which extends throughout the length thereof and is of greatest width and depth at the toe of the pad, the cavity gradually tapering or diminishingin depth and breadth at each side from the toe to the heel, so that the heel ends of the cavity are relatively minute. The dotted lines in Figs. 1 and 2 show this construction. This makes the pad yielding at the toe and relatively stiff at the heel, since it is at the latter point that the greatest strain is borne, and to provide for this the pad is thus made stiffer at the heel. The cavity cforms an air-chamber, which is so constructed that there is to a certain degree a pneumatic cushion formed. This is'true owing to the comparatively small heel ends of the airchamber, which are not large enough to allow the unrestrained circulation of air, and therefore when the toe part of the pad is compressed the air cannot escape with sufficient rapidity to avoid resisting the compressive action. It will thus be seen that the peculiar form of the cavity or air-chamber 0 serves tWo distinct purposes.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A hoof-pad, formed of yielding material in essentially horseshoe shape the central portion of the pad being open, said pad being provided with an air-chamber therein, at the inner face, the chamber running continuously throughout the length of the pad and having an opening into the atmosphere.

2. A hoof-pad, formed of yielding material in essentially horseshoe shape the central portion of the pad being open, said pad being provided with an interior air-chamber therein, the chamber being largest at the toe of the shoe, and gradually tapering or diminishing in cross-sectional area at each side toward the heel at which point it opens into the atmosphere.

3. A hoof-pad of horseshoe shape, the central portion of the pad being open, said pad being formed with an air-channel in the face, said channel extending around the pad following the horseshoe shape thereof and extending through the pad to the atmosphere at the heel, the channel decreasing in depth at each side from the front rearwardly and the material between the channel and the face of the pad increasing in thickness from the front to the heel.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing Witnesses.

JOHN CAMPBELL,

Witnesses:

W. IRVING TAYLOR, WILLIAM E. PARREMORE. 

